Articles

All articles, grouped by subject. Within each group they are listed in the order they are best read.

History of Physics

• Did Maxwell Write in Quaternions?
  What the 1865 paper actually contains, and where the myth came from.
• Lorenz, Not Lorentz
  A gauge condition published in 1867, and a century of misattribution.
• Heaviside’s Other Equations
  Gravitation by analogy, twenty-two years before General Relativity.

Quantum & Gauge

• A Phase Without a Field
  Aharonov–Bohm, and what the potentials turned out to be carrying.
• The Term That Isn’t Hermitian
  A term that breaks a rule everyone learns first — and why it doesn’t.
• What the Electrons Respond To
  No force, no field, and a measurable voltage — where the coupling actually lives.

Mathematical Methods

• The Algebra Hamilton Was Looking For
  How quaternion multiplication produces the dot and cross products at once.
• One Operator, Four Domains
  The same derivative applied to relativity, fluids and quantum mechanics — and where it fails.
• The Fifth Equation
  Where the Lorenz condition comes from, when it isn’t imposed.
• Four Components of One Product
  What the Poynting theorem contains when it isn’t collapsed to a scalar.

Classical Electrodynamics

• The Antenna Nobody Built
  Compton scattering, the geomagnetic field, and an antenna that assembled itself in nanoseconds.
• Where the Charge Comes From
  A time-varying monopole cannot exist — and the formalism says so in three different places.
• The Coil That Cannot Screen
  Four ways to find out what an instrument is actually responding to.
• The Antenna That Wasn’t One
  Right about the band, wrong about the path.
• Two Watts To Everywhere
  The antenna built out of bad ground.

Forgotten Topics

• The Missing Half
  Half the energy disappears, and the amount does not depend on where it goes.
• Immediately
  One word in the standard answer, and the twelve orders of magnitude hiding inside it.
• Neither Field Creates The Other
  What the causal solution of Maxwell’s equations actually says.

Technical notes

Formal work, preprints and technical notes are deposited on Zenodo and listed under ORCID 0009-0007-3660-8498.

ORCID: https://orcid.org
Email: contact@stefanofilippi.org